Some tagged posts don't appear in the tags pages

[eddennison]

I have posts. The posts have tags in the front matter:

---
title:  "Magic"
date:   2024-01-01  
description: Optimizing the cell service.
tags:
 - frugal
 - plumbing
---

When I view a tag page, e.g. the page that should list all the posts that contain the specified tag, as:

https://mydomain.com/tags/plumbing/

It doesn't list all the posts with that tag. If the tag is applied to only a single post, the post is not in the page (the page is empty). If the tag is applied to multiple posts, then all of the posts except the last one (last in filename order) are present.

This is a pretty much plain-vanilla 11ty base blog.

[eddennison]

User error, never mind.